我尝试按照 angularjs 网站上的步骤操作，但遇到错误。
这是我的 package.json 的内容:
$cat package.json
{
"name": "angularjs-seed",
"description": "A starter project for AngularJS",
"repository": "https://github.com/angular/angular-seed",
"devDependencies": {
"phantomjs": "~1.9",
"karma": "~0.10.4",
"karma-junit-reporter": "~0.1",
"karma-jasmine": "~0.1.3",
"karma-ng-scenario": "~0.1",
"karma-chrome-launcher": "~0.1.0",
"karma-firefox-launcher": "~0.1.0",
"karma-html2js-preprocessor": "~0.1.0",
"karma-requirejs": "~0.1.0",
"karma-coffee-preprocessor": "~0.1.0",
"karma-phantomjs-launcher": "~0.1.0",
"karma-script-launcher": "~0.1.0"
}
}
这是我尝试执行$npm install时出现的错误
nisevi@nisevi-IdeaPad angular-phonecat (master):$ npm install
npm http GET https://registry.npmjs.org/phantomjs
npm http GET https://registry.npmjs.org/karma
npm http 304 https://registry.npmjs.org/karma
npm http 304 https://registry.npmjs.org/phantomjs
npm http GET https://registry.npmjs.org/adm-zip/0.2.1
npm http GET https://registry.npmjs.org/kew
npm http GET https://registry.npmjs.org/ncp/0.4.2
npm http GET https://registry.npmjs.org/mkdirp/0.3.5
npm http GET https://registry.npmjs.org/which
npm http GET https://registry.npmjs.org/rimraf
npm http GET https://registry.npmjs.org/npmconf/0.0.24
npm http GET https://registry.npmjs.org/di
npm http GET https://registry.npmjs.org/socket.io
npm http GET https://registry.npmjs.org/glob
npm http GET https://registry.npmjs.org/chokidar
npm http GET https://registry.npmjs.org/minimatch
npm http GET https://registry.npmjs.org/http-proxy
npm http GET https://registry.npmjs.org/rimraf
npm http GET https://registry.npmjs.org/optimist
npm http GET https://registry.npmjs.org/coffee-script
npm http GET https://registry.npmjs.org/q
npm http GET https://registry.npmjs.org/colors/0.6.0-1
npm http GET https://registry.npmjs.org/lodash
npm http GET https://registry.npmjs.org/mime
npm http GET https://registry.npmjs.org/useragent
npm http GET https://registry.npmjs.org/log4js
npm http GET https://registry.npmjs.org/graceful-fs
npm http GET https://registry.npmjs.org/connect
npm http 304 https://registry.npmjs.org/which
npm http 304 https://registry.npmjs.org/kew
npm http 304 https://registry.npmjs.org/mkdirp/0.3.5
npm http 304 https://registry.npmjs.org/rimraf
npm http 304 https://registry.npmjs.org/npmconf/0.0.24
npm http 304 https://registry.npmjs.org/di
npm http 304 https://registry.npmjs.org/adm-zip/0.2.1
npm http 304 https://registry.npmjs.org/socket.io
npm http 304 https://registry.npmjs.org/minimatch
npm http 304 https://registry.npmjs.org/glob
npm http 304 https://registry.npmjs.org/chokidar
npm http 304 https://registry.npmjs.org/http-proxy
npm http 304 https://registry.npmjs.org/optimist
npm http 304 https://registry.npmjs.org/coffee-script
npm http 304 https://registry.npmjs.org/rimraf
npm http 304 https://registry.npmjs.org/ncp/0.4.2
npm http GET https://registry.npmjs.org/config-chain
npm http GET https://registry.npmjs.org/inherits
npm http GET https://registry.npmjs.org/nopt
npm http GET https://registry.npmjs.org/semver
npm http GET https://registry.npmjs.org/once
npm http GET https://registry.npmjs.org/osenv/0.0.3
npm http GET https://registry.npmjs.org/ini
npm http 304 https://registry.npmjs.org/lodash
npm http 304 https://registry.npmjs.org/q
npm http 304 https://registry.npmjs.org/useragent
npm http 304 https://registry.npmjs.org/colors/0.6.0-1
npm http 304 https://registry.npmjs.org/mime
npm http 304 https://registry.npmjs.org/log4js
npm http 304 https://registry.npmjs.org/connect
npm http 304 https://registry.npmjs.org/graceful-fs
npm http 304 https://registry.npmjs.org/config-chain
npm http 304 https://registry.npmjs.org/inherits
npm http 304 https://registry.npmjs.org/osenv/0.0.3
npm http 304 https://registry.npmjs.org/nopt
npm http 304 https://registry.npmjs.org/semver
npm http 304 https://registry.npmjs.org/once
> <a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="3a59525551535e5b487a0a1402140b" rel="noreferrer noopener nofollow">[email protected]</a> postinstall /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/node_modules/karma/node_modules/chokidar
> node setup-deps.js
sh: 1: node: not found
npm WARN This failure might be due to the use of legacy binary "node"
npm WARN For further explanations, please read
/usr/share/doc/nodejs/README.Debian
npm http 304 https://registry.npmjs.org/ini
npm ERR! Error: ENOENT, utime '/home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/node_modules/karma/node_modules/log4js/lib/debug.js'
npm ERR! If you need help, you may report this log at:
npm ERR! <http://bugs.debian.org/npm>
npm ERR! or use
npm ERR! reportbug --attach /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/npm-debug.log npm
npm ERR! System Linux 3.11.0-18-generic
npm ERR! command "/usr/bin/nodejs" "/usr/bin/npm" "install"
npm ERR! cwd /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat
npm ERR! node -v v0.10.15
npm ERR! npm -v 1.2.18
npm ERR! path /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/node_modules/karma/node_modules/log4js/lib/debug.js
npm ERR! fstream_path /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/node_modules/karma/node_modules/log4js/lib/debug.js
npm ERR! fstream_type File
npm ERR! fstream_class FileWriter
npm ERR! fstream_finish_call utimes
npm ERR! code ENOENT
npm ERR! errno 34
npm ERR! fstream_stack /usr/lib/nodejs/fstream/lib/writer.js:305:19
npm ERR! fstream_stack Object.oncomplete (fs.js:107:15)
npm ERR! Error: ENOENT, utime '/home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/node_modules/karma/node_modules/mime/types/node.types'
npm ERR! If you need help, you may report this log at:
npm ERR! <http://bugs.debian.org/npm>
npm ERR! or use
npm ERR! reportbug --attach /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/npm-debug.log npm
npm ERR! System Linux 3.11.0-18-generic
npm ERR! command "/usr/bin/nodejs" "/usr/bin/npm" "install"
npm ERR! cwd /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat
npm ERR! node -v v0.10.15
npm ERR! npm -v 1.2.18
npm ERR! path /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/node_modules/karma/node_modules/mime/types/node.types
npm ERR! fstream_path /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/node_modules/karma/node_modules/mime/types/node.types
npm ERR! fstream_type File
npm ERR! fstream_class FileWriter
npm ERR! fstream_finish_call utimes
npm ERR! code ENOENT
npm ERR! errno 34
npm ERR! fstream_stack /usr/lib/nodejs/fstream/lib/writer.js:305:19
npm ERR! fstream_stack Object.oncomplete (fs.js:107:15)
npm ERR! Error: ENOENT, utime '/home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/node_modules/karma/node_modules/optimist/example/line_count_options.js'
npm ERR! If you need help, you may report this log at:
npm ERR! <http://bugs.debian.org/npm>
npm ERR! or use
npm ERR! reportbug --attach /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/npm-debug.log npm
npm ERR! System Linux 3.11.0-18-generic
npm ERR! command "/usr/bin/nodejs" "/usr/bin/npm" "install"
npm ERR! cwd /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat
npm ERR! node -v v0.10.15
npm ERR! npm -v 1.2.18
npm ERR! path /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/node_modules/karma/node_modules/optimist/example/line_count_options.js
npm ERR! fstream_path /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/node_modules/karma/node_modules/optimist/example/line_count_options.js
npm ERR! fstream_type File
npm ERR! fstream_class FileWriter
npm ERR! fstream_finish_call utimes
npm ERR! code ENOENT
npm ERR! errno 34
npm ERR! fstream_stack /usr/lib/nodejs/fstream/lib/writer.js:305:19
npm ERR! fstream_stack Object.oncomplete (fs.js:107:15)
npm ERR! EEXIST, mkdir '/home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/node_modules/karma/node_modules/glob/test'
File exists: /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/node_modules/karma/node_modules/glob/test
Move it away, and try again.
npm ERR! System Linux 3.11.0-18-generic
npm ERR! command "/usr/bin/nodejs" "/usr/bin/npm" "install"
npm ERR! cwd /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat
npm ERR! node -v v0.10.15
npm ERR! npm -v 1.2.18
npm ERR! path /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/node_modules/karma/node_modules/glob/test
npm ERR! fstream_path /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/node_modules/karma/node_modules/glob/test/pause-resume.js
npm ERR! fstream_type File
npm ERR! fstream_class FileWriter
npm ERR! code EEXIST
npm ERR! errno 47
npm ERR! fstream_stack /usr/lib/nodejs/fstream/lib/writer.js:171:23
npm ERR! fstream_stack /usr/lib/nodejs/mkdirp/index.js:45:53
npm ERR! fstream_stack Object.oncomplete (fs.js:107:15)
npm ERR! EEXIST, mkdir '/home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/node_modules/karma/node_modules/connect/lib/middleware'
File exists: /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/node_modules/karma/node_modules/connect/lib/middleware
Move it away, and try again.
npm ERR! System Linux 3.11.0-18-generic
npm ERR! command "/usr/bin/nodejs" "/usr/bin/npm" "install"
npm ERR! cwd /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat
npm ERR! node -v v0.10.15
npm ERR! npm -v 1.2.18
npm ERR! path /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/node_modules/karma/node_modules/connect/lib/middleware
npm ERR! fstream_path /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/node_modules/karma/node_modules/connect/lib/middleware/favicon.js
npm ERR! fstream_type File
npm ERR! fstream_class FileWriter
npm ERR! code EEXIST
npm ERR! errno 47
npm ERR! fstream_stack /usr/lib/nodejs/fstream/lib/writer.js:171:23
npm ERR! fstream_stack /usr/lib/nodejs/mkdirp/index.js:45:53
npm ERR! fstream_stack Object.oncomplete (fs.js:107:15)
npm ERR! Error: ENOENT, lstat '/home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/node_modules/karma/node_modules/http-proxy/examples/http/concurrent-proxy.js'
npm ERR! If you need help, you may report this log at:
npm ERR! <http://bugs.debian.org/npm>
npm ERR! or use
npm ERR! reportbug --attach /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/npm-debug.log npm
npm ERR! System Linux 3.11.0-18-generic
npm ERR! command "/usr/bin/nodejs" "/usr/bin/npm" "install"
npm ERR! cwd /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat
npm ERR! node -v v0.10.15
npm ERR! npm -v 1.2.18
npm ERR! path /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/node_modules/karma/node_modules/http-proxy/examples/http/concurrent-proxy.js
npm ERR! fstream_path /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/node_modules/karma/node_modules/http-proxy/examples/http/concurrent-proxy.js
npm ERR! fstream_type File
npm ERR! fstream_class FileWriter
npm ERR! code ENOENT
npm ERR! errno 34
npm ERR! fstream_stack /usr/lib/nodejs/fstream/lib/writer.js:284:26
npm ERR! fstream_stack Object.oncomplete (fs.js:107:15)
npm ERR! <a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="4e2d262125272a2f3c0e7e6076607f" rel="noreferrer noopener nofollow">[email protected]</a> postinstall: `node setup-deps.js`
npm ERR! `sh "-c" "node setup-deps.js"` failed with 127
npm ERR!
npm ERR! Failed at the <a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="b8dbd0d7d3d1dcd9caf88896809689" rel="noreferrer noopener nofollow">[email protected]</a> postinstall script.
npm ERR! This is most likely a problem with the chokidar package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR! node setup-deps.js
npm ERR! You can get their info via:
npm ERR! npm owner ls chokidar
npm ERR! There is likely additional logging output above.
npm ERR! System Linux 3.11.0-18-generic
npm ERR! command "/usr/bin/nodejs" "/usr/bin/npm" "install"
npm ERR! cwd /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat
npm ERR! node -v v0.10.15
npm ERR! npm -v 1.2.18
npm ERR! code ELIFECYCLE
npm ERR! Error: ENOENT, lstat '/home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/node_modules/karma/node_modules/minimatch/test/defaults.js'
npm ERR! If you need help, you may report this log at:
npm ERR! <http://bugs.debian.org/npm>
npm ERR! or use
npm ERR! reportbug --attach /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/npm-debug.log npm
npm ERR! System Linux 3.11.0-18-generic
npm ERR! command "/usr/bin/nodejs" "/usr/bin/npm" "install"
npm ERR! cwd /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat
npm ERR! node -v v0.10.15
npm ERR! npm -v 1.2.18
npm ERR! path /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/node_modules/karma/node_modules/minimatch/test/defaults.js
npm ERR! fstream_path /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/node_modules/karma/node_modules/minimatch/test/defaults.js
npm ERR! fstream_type File
npm ERR! fstream_class FileWriter
npm ERR! code ENOENT
npm ERR! errno 34
npm ERR! fstream_stack /usr/lib/nodejs/fstream/lib/writer.js:284:26
npm ERR! fstream_stack Object.oncomplete (fs.js:107:15)
npm ERR! Error: ENOENT, lstat '/home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/node_modules/karma/node_modules/socket.io/lib/parser.js'
npm ERR! If you need help, you may report this log at:
npm ERR! <http://bugs.debian.org/npm>
npm ERR! or use
npm ERR! reportbug --attach /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/npm-debug.log npm
npm ERR! System Linux 3.11.0-18-generic
npm ERR! command "/usr/bin/nodejs" "/usr/bin/npm" "install"
npm ERR! cwd /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat
npm ERR! node -v v0.10.15
npm ERR! npm -v 1.2.18
npm ERR! path /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/node_modules/karma/node_modules/socket.io/lib/parser.js
npm ERR! fstream_path /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/node_modules/karma/node_modules/socket.io/lib/parser.js
npm ERR! fstream_type File
npm ERR! fstream_class FileWriter
npm ERR! code ENOENT
npm ERR! errno 34
npm ERR! fstream_stack /usr/lib/nodejs/fstream/lib/writer.js:284:26
npm ERR! fstream_stack Object.oncomplete (fs.js:107:15)
npm ERR! Error: ENOENT, lstat '/home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/node_modules/karma/node_modules/q/q.js'
npm ERR! If you need help, you may report this log at:
npm ERR! <http://bugs.debian.org/npm>
npm ERR! or use
npm ERR! reportbug --attach /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/npm-debug.log npm
npm ERR! System Linux 3.11.0-18-generic
npm ERR! command "/usr/bin/nodejs" "/usr/bin/npm" "install"
npm ERR! cwd /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat
npm ERR! node -v v0.10.15
npm ERR! npm -v 1.2.18
npm ERR! path /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/node_modules/karma/node_modules/q/q.js
npm ERR! fstream_path /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/node_modules/karma/node_modules/q/q.js
npm ERR! fstream_type File
npm ERR! fstream_class FileWriter
npm ERR! code ENOENT
npm ERR! errno 34
npm ERR! fstream_stack /usr/lib/nodejs/fstream/lib/writer.js:284:26
npm ERR! fstream_stack Object.oncomplete (fs.js:107:15)
npm ERR! Error: ENOENT, lstat '/home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/node_modules/karma/node_modules/coffee-script/lib/coffee-script/command.js'
npm ERR! If you need help, you may report this log at:
npm ERR! <http://bugs.debian.org/npm>
npm ERR! or use
npm ERR! reportbug --attach /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/npm-debug.log npm
npm ERR! System Linux 3.11.0-18-generic
npm ERR! command "/usr/bin/nodejs" "/usr/bin/npm" "install"
npm ERR! cwd /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat
npm ERR! node -v v0.10.15
npm ERR! npm -v 1.2.18
npm ERR! path /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/node_modules/karma/node_modules/coffee-script/lib/coffee-script/command.js
npm ERR! fstream_path /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/node_modules/karma/node_modules/coffee-script/lib/coffee-script/command.js
npm ERR! fstream_type File
npm ERR! fstream_class FileWriter
npm ERR! code ENOENT
npm ERR! errno 34
npm ERR! fstream_stack /usr/lib/nodejs/fstream/lib/writer.js:284:26
npm ERR! fstream_stack Object.oncomplete (fs.js:107:15)
npm ERR! Error: ENOENT, lstat '/home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/node_modules/karma/node_modules/useragent/lib/regexps.js'
npm ERR! If you need help, you may report this log at:
npm ERR! <http://bugs.debian.org/npm>
npm ERR! or use
npm ERR! reportbug --attach /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/npm-debug.log npm
npm ERR! System Linux 3.11.0-18-generic
npm ERR! command "/usr/bin/nodejs" "/usr/bin/npm" "install"
npm ERR! cwd /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat
npm ERR! node -v v0.10.15
npm ERR! npm -v 1.2.18
npm ERR! path /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/node_modules/karma/node_modules/useragent/lib/regexps.js
npm ERR! fstream_path /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/node_modules/karma/node_modules/useragent/lib/regexps.js
npm ERR! fstream_type File
npm ERR! fstream_class FileWriter
npm ERR! code ENOENT
npm ERR! errno 34
npm ERR! fstream_stack /usr/lib/nodejs/fstream/lib/writer.js:284:26
npm ERR! fstream_stack Object.oncomplete (fs.js:107:15)
npm http GET https://registry.npmjs.org/abbrev
npm ERR! Error: ENOENT, lstat '/home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/node_modules/karma/node_modules/lodash/dist/lodash.compat.js'
npm ERR! If you need help, you may report this log at:
npm ERR! <http://bugs.debian.org/npm>
npm ERR! or use
npm ERR! reportbug --attach /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/npm-debug.log npm
npm ERR! System Linux 3.11.0-18-generic
npm ERR! command "/usr/bin/nodejs" "/usr/bin/npm" "install"
npm ERR! cwd /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat
npm ERR! node -v v0.10.15
npm ERR! npm -v 1.2.18
npm ERR! path /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/node_modules/karma/node_modules/lodash/dist/lodash.compat.js
npm ERR! fstream_path /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/node_modules/karma/node_modules/lodash/dist/lodash.compat.js
npm ERR! fstream_type File
npm ERR! fstream_class FileWriter
npm ERR! code ENOENT
npm ERR! errno 34
npm ERR! fstream_stack /usr/lib/nodejs/fstream/lib/writer.js:284:26
npm ERR! fstream_stack Object.oncomplete (fs.js:107:15)
npm http GET https://registry.npmjs.org/proto-list
npm http 304 https://registry.npmjs.org/abbrev
npm http 304 https://registry.npmjs.org/proto-list
> <a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="89f9e1e8e7fde6e4e3fac9b8a7b0a7bea4b8" rel="noreferrer noopener nofollow">[email protected]</a> install /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/node_modules/phantomjs
> node install.js
sh: 1: node: not found
npm WARN This failure might be due to the use of legacy binary "node"
npm WARN For further explanations, please read
/usr/share/doc/nodejs/README.Debian
npm ERR!
npm ERR! Additional logging details can be found in:
npm ERR! /home/nisevi/Documents/proyects/proyects_angular/angular-phonecat/npm-debug.log
npm ERR! not ok code 0
如果有人能帮助我，我将非常感激!!
最佳答案
有时 npm 会给我们带来令人毛骨悚然的错误...我发现这些错误的伪解决方案是手动重建 package.json 文件。
因此运行所有依赖项:
npm install packageName --save-dev
至少可以说，这很烦人，但您可能能够找到哪个包是罪魁祸首，因为它将获得最新版本，也许您正在使用的包版本中有一个版本依赖于某些遗留包，例如它似乎一直在喊叫。
更新:
这可以解决问题，但问题出在 karma 的版本上。根据phone-cat github页面上的问题页面。您使用的 karma 版本有问题。将其更改为
"karma": "~0.12",
一切都已修复。现在不需要遍历每个包......
关于node.js - 教程 AngularJS-npm 安装错误，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/22496060/